The utility model discloses a photoelectric detector array component. The parts of the photoelectric detector array component are connected as follows: a photoelectric detection array of an ultra-long linear array realizes photoelectric conversion and transfers the signal after conversion to an analog switching circuit; the analog switching circuit realizes the parallel output conversion from a 512 path to a 32 path and transfers the signal to an amplifying circuit; the amplifying circuit realizes amplification and output of the signal; the amplified output signal is transferred to an external control system through a parallel output interface; and the external control system outputs a control signal to control the analog switching circuit. The photoelectric detector array component in the utility model has the beneficial technical effects of overcoming the defect that the original light spot information can not be directly acquired by adopting an optical beam shrinking system testing method, and simplifying a scanning system from two dimensions into one dimension, thereby greatly simplifying the scanning system; and a light source of which the single duration time is greater than 100mu s can be detected for one linear array.